I have a late 2006 macbook and had the issue with the cracking case repaired today, however, Apple only repaired half of the issue. The 'top' half of the case was fixed (new keyboard, trackpad etc) was replaced and I am more than happy with it. The bottom half of the case (section with USB ports, bottom of the MacBook etc) still has cracks in it and clearly hasn't been replaced.

Is this something that should be replaced as a manufacturing fault as they have done with the keyboard, palm rest, trackpad etc?